When playing Aion your movement will give you certain combat bonuses that will increase your characters potency or defense. These combat bonuses aren't anything amazingly big to the point of where they will change the game, however these bonuses could help you in a 1v1 fight against another player.
Below is a list of these combat bonuses and how you can earn them in combat:
Attack Bonus: Moving forward increases your attack bonus and decreases your phyiscal defense and magical resistances.
Block Bonus: Moving backwards increases your block bonus
Evasion Bonus: Moving Side to side increases your evasion rating
Please note you can also earn these bonuses in Aerial Combat as well.